Electric oven.



E I f. x %1 st: ,/M Invntor:

1. BRADLEY.

ELECTRIC OVEN(` vAPPLICATION man MAR.2|, 191s.

1,233,838. A y PafendJuly 17, 1917.

2 SHEETSwSHEET I.

J. BRADLEY.

I ELECTRIC OVEN.

APPLlcArloN FILED MAR. 21 1916.

Patented July 17'-, 1917.

UNITED STATES NPATENT {gerrie-e3.

Josmn BRADLEY, .on BnooxLYm NEW YORK, Assrcmon rro Auerir- Wns'rLnun, or

` NEW YORK, N. Y.4

ELECTRIC OV'EN.

Specication of Letters Patent.

Application led March 21, 1916. Serial No` 85,5170.

Ovens, of which the following is a specifi# cation.

The object of my invention is to provide un improved form of heating oven more particularly intended for use in bottle capping and sealing machines, but applicable to a` great variety of uses.

In'bottle ca ping and sealing machines in which the bot es' are to be capped and sealed by means of a fibrous material, it is usual to employ fibrous material in the form of a round disk of such diameter and thickness as may be suitable for the work intended. This disk'is folded'and ressed into shape around the mouthv of the ttle by means of a capping tool mounted on a plunger head. -It has been. found necessary or desirable in most cases to have this` disk preheated, .when presented to the capping tool,so as to be sufficiently semi-plastic or moldable to respond readil to the various pressures exerted by the di erent parts of the capping tool.

The purpose of my invent-ion is to rovide a new and 'imgroved oven whereby ese capping disks are cated on their way to the capping tool.

.n the accompanying drawings I have selected thecircular form for my improved hea ting oven for reasons of manifest convenience and have made it inclosed throughout except -for n circular opening in the bot tom of a size su itable to receive the upwardly moving capping disk. lt will be readily understood however, that the shape may be largely varied to suit varying conditions in which the oven may be'used.

Figure-1, is a vertical sect-ion.

Fig. 2, is a top view. l

Fig.` 3, is a. horizontal section on line 3-3 of Fig. 1,

Same letters indicate similar parts in the diilcrent figures.

A, is the body o f the oven, preferablyY of metal and formed with an interior heating drum B. Heat is supplied by an electric current from a source of power (not shown) and enterin and passing by the terminals or binding posts a, a, aya;

through the oven- The interior drum is held to the oven body by sot screws b,

iVhon used in a bottle capping and sealing machine this'oven is preferably suspended 'from an arm (l, forming part of `said ma chine.

Resistanoo'coils, preferably two in num` ber2 are arranged vertically and circumfersofl ent-lally around the interim of the dru|n"B as shown in lim-.s l) and may-beused either v in series or multiple as. desired, ivith a ',i'eii to the stren'fth of current received fromthe line wire. t( ln'iously these coils must be so located as not to interfere with the passage of the disk and its ope mechanism E, represents a cap .uff ifi-sk, which is u C pushed upwardlyv nu the oven by the elevator table l?, on shi .t rests and 'which is operated by. devices {not shown) driven preferably by. power derived from said capping and sealing machine, untl it reaches the position shown in dotted lines in Fig. l, where it remains during a prescribed period, sufficient to heat the disk tothe desired temperature.

The disk is held flat during this operation by a circular guide plate G, provided with a seriesof blunt points c, c, which rest upon said disk and are held down by the combined weight of the ruido plate G and its stem H, which is slidelily mounted in the bearing I, secured to the supporting erm C.

ing their descent out of the oven, whereupon the heated disk is removed from the eleva.- tor plate and a fresh disk substituted.

To secure the proper degree of heat under the varying temperatures of the room or other locahtv in which the oven isl oper` ated, I provide for the admission of fresh air, when required, through the top of the oven.

To this end the top of thc oven is pr0- vided With-a number of holes or openings e, e, shown as six in Fi 2. A damper plate J is supported insi e the oven` by a .pin f, through the top of `the oven and is provided with apertures g, g, which register' with the holes ez e, when full access of air is desired, but .which register onlyt'o varying degreesas shown in Fig. 2, when a, partial draft is required.

be readi y understood as follows: l The current being turned on and the normal temperature of the oven resulting there 20 from being ascertained, the' damper is turned, if necessary, to adxnt 'sucient' air to laccommodate this temperature to that desired for heating the disk. Thev driving 'mechanism is thenstarted and the elevator begins to reciprocate intermittently into and 'out of the oven as above described. I

.I claim The above described electric heatin oven which comprises an electrically heatedgdrum portion, a diskcarrying elevator, reciproeating vertically into and out-of said drum, a vertcall be raised y said elevator and to descend .therewith under the action of gravity and a suitable damper whereby the temperature of the interiorlofsaid oven is modied as. desired.

' J OSIAH BRADLEY.

sliding guide plate adapted to, 

